svn commit: r256831 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Mon Oct 21 06:55:07 2013
New Revision: 256831
URL: http://svnweb.freebsd.org/changeset/base/256831

Log:
  Added test scenario for per-filesystem soft-updates lock.
  
  Sponsored by:	EMC / Isilon storage division

Added:
  user/pho/stress2/misc/pfl.sh   (contents, props changed)

Added: user/pho/stress2/misc/pfl.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/pfl.sh	Mon Oct 21 06:55:07 2013	(r256831)
@@ -0,0 +1,167 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2013 EMC Corp.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+# Test scenario for the change of a global SU lock to a per filesystem lock.
+
+. ../default.cfg
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > pfl.c
+cc -o pfl -Wall -Wextra pfl.c || exit 1
+rm -f pfl.c
+cd $here
+
+mp1=$mntpoint
+mp2=${mntpoint}2
+[ -d $mp2 ] || mkdir -p $mp2
+md1=$mdstart
+md2=$((mdstart + 1))
+
+opt=$([ $((`date '+%s'` % 2)) -eq 0 ] && echo "-j" || echo "-U")
+mount | grep $mp1 | grep -q /dev/md && umount -f $mp1
+mdconfig -l | grep -q md$md1 &&  mdconfig -d -u $md1
+mdconfig -a -t swap -s 2g -u $md1
+bsdlabel -w md$md1 auto
+newfs $opt md${md1}$part > /dev/null
+mount /dev/md${md1}$part $mp1
+chmod 777 $mp1
+
+mount | grep $mp2 | grep -q /dev/md && umount -f $mp2
+mdconfig -l | grep -q md$md2 &&  mdconfig -d -u $md2
+mdconfig -a -t swap -s 2g -u $md2
+bsdlabel -w md$md2 auto
+newfs $opt md${md2}$part > /dev/null
+mount /dev/md${md2}$part $mp2
+chmod 777 $mp2
+
+su ${testuser} -c "cd $mp1; /tmp/pfl" &
+su ${testuser} -c "cd $mp2; /tmp/pfl" &
+wait; wait
+
+while mount | grep "$mp2 " | grep -q /dev/md; do
+	umount $mp2 || sleep 1
+done
+mdconfig -d -u $md2
+while mount | grep "$mp1 " | grep -q /dev/md; do
+	umount $mp1 || sleep 1
+done
+mdconfig -d -u $md1
+exit
+
+EOF
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sched.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#define PARALLEL 10
+static int size = 10000;
+
+void
+test(void)
+{
+	int fd, i, j;
+	pid_t pid;
+	char file[128];
+
+	pid = getpid();
+	sprintf(file,"d%05d", pid);
+	if (mkdir(file, 0740) == -1)
+		err(1, "mkdir(%s)", file);
+	chdir(file);
+	for (j = 0; j < size; j++) {
+		sprintf(file,"p%05d.%05d", pid, j);
+		if ((fd = open(file, O_CREAT | O_TRUNC | O_WRONLY, 0644)) == -1) {
+			if (errno != EINTR) {
+				warn("mkdir(%s). %s:%d", file, __FILE__, __LINE__);
+				unlink("continue");
+				break;
+			}
+		}
+		if (arc4random() % 100 < 10)
+			if (write(fd, "1", 1) != 1)
+				err(1, "write()");
+		close(fd);
+
+	}
+	sleep(3);
+
+	for (i = --j; i >= 0; i--) {
+		sprintf(file,"p%05d.%05d", pid, i);
+		if (unlink(file) == -1)
+			err(3, "unlink(%s)", file);
+		
+	}
+	chdir("..");
+	sprintf(file,"d%05d", pid);
+	if (rmdir(file) == -1)
+		err(3, "unlink(%s)", file);
+}
+
+int
+main(void)
+{
+	int fd, i, j, k;
+
+	umask(0);
+	if ((fd = open("continue", O_CREAT, 0644)) == -1)
+		err(1, "open()");
+	close(fd);
+	for (i = 0; i < 1; i++) {
+		for (j = 0; j < PARALLEL; j++) {
+			if (fork() == 0) {
+				for (k = 0; k < 50; k++)
+					test();
+				exit(0);
+			}
+		}
+		
+		for (j = 0; j < PARALLEL; j++)
+			wait(NULL);
+
+		if (access("continue", R_OK) == -1) {
+			fprintf(stderr, "Loop #%d\n", i + 1); fflush(stderr);
+			break;
+		}
+	}
+	unlink("continue");
+
+	return (0);
+}